From 1fc3f171270b651ae871e5131da55b5825a11686 Mon Sep 17 00:00:00 2001 From: Christian Mauderer Date: Tue, 28 Sep 2021 14:19:47 +0200 Subject: bsp/imx: Add cs_change support to SPI --- bsps/arm/imx/spi/imx-ecspi.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'bsps/arm/imx') diff --git a/bsps/arm/imx/spi/imx-ecspi.c b/bsps/arm/imx/spi/imx-ecspi.c index 1ffc4d9798..243f508d51 100644 --- a/bsps/arm/imx/spi/imx-ecspi.c +++ b/bsps/arm/imx/spi/imx-ecspi.c @@ -351,6 +351,9 @@ static void imx_ecspi_interrupt(void *arg) } else if (bus->in_transfer > 0) { regs->intreg = IMX_ECSPI_RR; } else { + if (bus->msg->cs_change) { + imx_ecspi_set_chipsel(bus, IMX_ECSPI_CS_NONE); + } --bus->msg_todo; ++bus->msg; imx_ecspi_next_msg(bus, regs); @@ -377,9 +380,6 @@ static int imx_ecspi_check_messages( (msg->cs > IMX_ECSPI_MAX_CHIPSELECTS || !bus->cspins[msg->cs].valid)) { return -EINVAL; } - if (msg->cs_change != 0) { - return -EINVAL; - } ++msg; --size; @@ -408,7 +408,9 @@ static int imx_ecspi_transfer( imx_ecspi_next_msg(bus, bus->regs); rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT); - imx_ecspi_set_chipsel(bus, IMX_ECSPI_CS_NONE); + if (msgs[n-1].cs_change) { + imx_ecspi_set_chipsel(bus, IMX_ECSPI_CS_NONE); + } } return rv; } -- cgit v1.2.3